Institute of Experimental Ophthalmology, Saarland University, 66421 Homburg, Saar, Germany.
AMIPLANT GmbH, Haidling 1, 91220 Schnaittach, Germany.
Biomed Res Int. 2019 Jun 27;2019:6425040. doi: 10.1155/2019/6425040. eCollection 2019.
The number of presbyopia correcting intraocular lenses (IOLs) is increasing and new technologies are constantly emerging with the aim of correcting the loss of accommodation after cataract surgery. Various optical designs have been proposed to implement multifocality or an extended depth of focus (EDOF). Depending on the optical principle of an implanted lens, the visual performance often is deteriorated by superposition of individual image planes and halos of varying intensity. This experimental study presents a concept to visualize the light fields and especially the halos of mono- and multifocal IOLs using the well known alcoholic beverage "ouzo" in order to obtain qualitative data on the imaging characteristics. We conclude that ouzo is a useful, cost effective, and nonpolluting medium for beam visualization and an alternative to fluorescein or milk, which could find an application for educational purposes.
矫正老视的眼内晶状体（IOL）的数量正在增加，新技术也在不断涌现，旨在矫正白内障手术后的调节力丧失。已经提出了各种光学设计来实现多焦点或扩展景深（EDOF）。根据植入透镜的光学原理，视觉性能通常会因叠加不同强度的单个像平面和晕影而恶化。这项实验研究提出了一个概念，即使用众所周知的酒精饮料“ouzo”来可视化光场，特别是单焦点和多焦点 IOL 的晕影，以获得关于成像特性的定性数据。我们得出结论，ouzo 是一种有用、经济实惠且无污染的光束可视化介质，可替代荧光素或牛奶，可用于教育目的。
